The smallest division on the scale of the triple beam balance is .1 g. what is the error in mass for measurements made with this balance?

Starting from the definition of a triple beam scale, we could say that this is a measuring instrument whose name comes from its operating system. It is made up of three beams which each carries different weights: One is responsible for measuring what corresponds to increments of 100g, the other to the range of increments of 10g and the third to a single range of 0 to 10g. The error for a triple beam measurement system can be twice the tenth of the minimum count, therefore

If we took this example into practice if we had a mass of 54.38343g

The error would be:

i think the answer is a, hope this is right, that would be my best guess.